create new Branch DDBAAS-99
adapt code to new schema(nickname, status, no JavaSerializedObject)
implement properties as JSON
implement retrieveUser + authenticate with uid or email or nickname
write modififaction
bugfixes new fields
check accountStatus when logging in
use jaxb-objects for properties
implement confirmation-API
add confirmations api
restrict getConfirmations to ADMIN, ADMIN_USER
add confirmation-API
debug confirmation API
remove duplicate confirmations when adding a confirmation
add EmailClient to send emails
-send emails
Merge remote-tracking branch 'origin/DDBAAS-99' into develop